Factors
2, 4, 6, 8, 10, 12, 14, 16, 18, 20
multiples of 2
A number that has 2 or more factors
composite number
15
composite
7, 14, 21, 28, 35, 42, 49, 56
multiples of 7
A number multiplied by another number to find a product
a factor
63
composite
10, 20, 30, 40, 50, 60, 70, 80, 90, 100
multiples of 10
The largest factor of 2 or more numbers
the greatest common factor
41
prime
15, 30, 45, 60, 75, 90,
multiples of 15
A number that is a multiple of 2 or more numbers.
a common multiple
79
prime
18, 36, 54, 72, 90
multiples of 18
An ordered set of numbers or objects
a pattern
1
neither prime nor composite